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OLIVER P. PETTENGILI), OF TOPSFIELD, MASSACHUSETTS. Letters Patent-No.67,579, dated August 6,1867.

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TO ALL PERSONS TO WI-IOM THESE PRESENTS SHALL COME.

Be it known that I, OLWER I. I'E'ITENGILL, of Topsiield, in the countyof Essex, and State of Massachusotts, hay/e invented a new-and usefulimprovedSolelEdge Finishing-Tool; and do hereby declare the same tobei'ully described in the following specification, and represented inthe accompanying drawings, of Which- Figure l'is a side elevation.l

Figure 2, an end vieu', and

Figure 3 a longitudinal section of it. Y In such drawings, A denotes thetool-head, which is a four-sided prism in form, except at its guide d,whose shape approximates to that of a frustum of a four-sided pyramid. Areversible-edge block, B, is so applied to each face ofthe head A as tobe capable of being revolved thereon without interference with either ofthe edgeblocks so applied to next adjaeent'i'aces of theA head. Each ofthe said edge-blocks is constructed with two {inishingen ls or edges, ab, of diierent sizes or shapes, and it is connected with the head A bymeans of a. clamp-screw, c, on which thc edge-block when the screw isloose can be turned, so as to bring either finishingedge a b intoy itscorrect relation with the guide or part d of the head. The said head isconnected with a. wooden handle, C, by means of a metallic shank, c,which extends from the said head, goes through thc handle, and screwsinto a metallic weight, D, placed against the end of thehandle. Thepurpose ofthe said weight is not only to aid in connecting the'handle tothehead A, but to serre as a means of counterbala'ncing the head and thefinishers when the handle is held` in the hand of a workman in theordinary way in which he usually holds a. sole-edge iinisher by itshandle. If not balanced on or about on theedge of the palm of thehandwhen the tool is held in the hand, it is liable to fall therefrom,and to be inconvenient in use, but when supplied with a counterbalanceweight, as described, the danger of its slipping out of the grasp of theoperative is much lessened, and it can b'e worked to better advantage.By having the head quadrfacial, and each finishing-block made with twoiinishingedges, and reversible, and of a width not greater than that ofthe face to which it is applied, each block may be turned about on its'connecting-screw without interference from either of the'other blocks.

One very material advantage of my implement over others in use is, that,by its construction= I am enabled to bring intov action either one ofeight finishing-edges, thus rendering the tool much more smooth than anyother of which I am aware.

I do not claim a sole-edge finishing-tool as made with two rotary andcircular edge-{inishing blocks applied 'to opposite sides of its head,cach of such blocks being of the same width around its circumference.What I claim as an improvement, is

The combination and arrangement of the series of reversible blocks B B BB, (each made with two separate finishing-edges of different sizes,)with quadrifacial or prismatic head A, constructed substantially asdescribed.

I also claim the combination 'and arrangement of the qnadrifacal head A,the series of reversible finishingblocks B B B B. the metallic shankh@,the handle O, and the counterbalance weight D, the whole being asspecified.

OLIVER P. PE',Il'lElTGrH..L

Witnesses:

E. H. EDDY, F. P. HALE, Jr.

